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NOAA/WDS Paleoclimatology - NEEM Ice Core NEEM-1 Time Scale

browse graphicPaleoclimatology - Ice Core
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Ice Core. The data include parameters of ice cores with a geographic location of Greenland. The time period coverage is from 108159 to 0 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
  • Cite as: Rasmussen, S.O.; Abbott, P.M.; Blunier, T.; Bourne, A.J.; Brook, E.J.; Buchardt, S.L.; Buizert, C.; Chappellaz, J.A.; Clausen, H.B.; Cook, E.; Dahl-Jensen, D.; Davies, S.M.; Guillevic, M.; Kipfstuhl, S.; Laepple, T.; Seierstad, I.K.; Severinghaus, J.; Steffensen, J.P.; Stowasser, C.; Svensson, A.M.; Vallelonga, P.; Vinther, B.M.; Wilhelms, F.; Winstrup, M. (2013-12-05): NOAA/WDS Paleoclimatology - NEEM Ice Core NEEM-1 Time Scale. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/gab6-fa09. Accessed [date].
  • Please refer to Credit tab for full citation information.
noaa-icecore-15615
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DistributorNOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact Data Center Contact
NOAA World Data Service for Paleoclimatology
828-271-4800
paleo@noaa.gov
Coverage DescriptionDate Range: 108159 cal yr BP to 0 cal yr BP;
Time Period-106209 to 1950
Spatial Bounding Box Coordinates
N: 77.45
S: 77.45
E: -51.066667
W: -51.066667
Spatial Coverage Map
General Documentation
Associated Resources
  • A first chronology for the North Greenland Eemian Ice Drilling (NEEM) ice core
    • Associated Reference published 2013
      Rasmussen, S.O., Abbott, P.M., Blunier, T., Bourne, A.J., Brook, E., Buchardt, S.L., Buizert, C., Chappellaz, J., Clausen, H.B., Cook, E., Dahl-Jensen, D., Davies, S.M., Guillevic, M., Kipfstuhl, S., Laepple, T., Seierstad, I.K., Severinghaus, J.P., Steffensen, J.P., Stowasser, C., Svensson, A., Vallelonga, P., Vinther, B.M., Wilhelms, F., and Winstrup, M., 2013: A first chronology for the North Greenland Eemian Ice Drilling (NEEM) ice core. Climate of the Past, 9, 2713-2730, 10.5194/cp-9-2713-2013
Publication Dates
  • publication: 2013-12-05
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress StatusComplete - production of the data has been completed
Data Update Frequency Data update frequency not available
Supplemental Information
STUDY NOTES: NEEM-1 ice core time scale with match points to NGRIP1 and NGRIP2 ice cores and the GICC05 timescale. Also included are NEEM and NGRIP DEP and ECM data, and NEEM d15N. Original Excel file contains the ice and gas time scales and all the info needed to construct it: match points, delta age calculations, flow model results, and accumulation rate results. A text version contains the same information, and additional text files contain the NEEM and NGRIP DEP, ECM, and d15N data series, presented in WDC Paleo text format.
ABSTRACT SUPPLIED BY ORIGINATOR: A stratigraphy-based chronology for the North Greenland Eemian Ice Drilling (NEEM) ice core has been derived by transferring the annual layer counted Greenland Ice Core Chronology 2005 (GICC05) and its model extension (GICC05modelext) from the NGRIP core to the NEEM core using 787 match points of mainly volcanic origin identified in the electrical conductivity measurement (ECM) and dielectrical profiling (DEP) records. Tephra horizons found in both the NEEM and NGRIP ice cores are used to test the matching based on ECM and DEP and provide five additional horizons used for the timescale transfer. A thinning function reflecting the accumulated strain along the core has been determined using a Dansgaard-Johnsen flow model and an isotope-dependent accumulation rate parameterization. Flow parameters are determined from Monte Carlo analysis constrained by the observed depth-age horizons. In order to construct a chronology for the gas phase, the ice age-gas age difference (D-age) has been reconstructed using a coupled firn densification-heat diffusion model. Temperature and accumulation inputs to the D-age model, initially derived from the water isotope proxies, have been adjusted to optimize the fit to timing constraints from d15N of nitrogen and high-resolution methane data during the abrupt onset of Greenland interstadials. The ice and gas chronologies and the corresponding thinning function represent the first chronology for the NEEM core, named GICC05modelext-NEEM-1. Based on both the flow and firn modelling results, the accumulation history for the NEEM site has been reconstructed. Together, the timescale and accumulation reconstruction provide the necessary basis for further analysis of the records from NEEM.
PurposeRecords of past temperature, precipitation, atmospheric trace gases, and other aspects of climate and environment derived from ice cores drilled on glaciers and ice caps around the world. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations.
Dataset Citation
  • Cite as: Rasmussen, S.O.; Abbott, P.M.; Blunier, T.; Bourne, A.J.; Brook, E.J.; Buchardt, S.L.; Buizert, C.; Chappellaz, J.A.; Clausen, H.B.; Cook, E.; Dahl-Jensen, D.; Davies, S.M.; Guillevic, M.; Kipfstuhl, S.; Laepple, T.; Seierstad, I.K.; Severinghaus, J.; Steffensen, J.P.; Stowasser, C.; Svensson, A.M.; Vallelonga, P.; Vinther, B.M.; Wilhelms, F.; Winstrup, M. (2013-12-05): NOAA/WDS Paleoclimatology - NEEM Ice Core NEEM-1 Time Scale. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/gab6-fa09. Accessed [date].
  • Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
Cited Authors
  • Rasmussen, S.O.
  • Abbott, P.M.
  • Blunier, T.
  • Bourne, A.J.
  • Brook, E.J.
  • Buchardt, S.L.
  • Buizert, C.
  • Chappellaz, J.A.
  • Clausen, H.B.
  • Cook, E.
  • Dahl-Jensen, D.
  • Davies, S.M.
  • Guillevic, M.
  • Kipfstuhl, S.
  • Laepple, T.
  • Seierstad, I.K.
  • Severinghaus, J.
  • Steffensen, J.P.
  • Stowasser, C.
  • Svensson, A.M.
  • Vallelonga, P.
  • Vinther, B.M.
  • Wilhelms, F.
  • Winstrup, M.
Originators
  • Rasmussen, S.O.
  • Abbott, P.M.
  • Blunier, T.
  • Bourne, A.J.
  • Brook, E.J.
  • Buchardt, S.L.
  • Buizert, C.
  • Chappellaz, J.A.
  • Clausen, H.B.
  • Cook, E.
  • Dahl-Jensen, D.
  • Davies, S.M.
  • Guillevic, M.
  • Kipfstuhl, S.
  • Laepple, T.
  • Seierstad, I.K.
  • Severinghaus, J.
  • Steffensen, J.P.
  • Stowasser, C.
  • Svensson, A.M.
  • Vallelonga, P.
  • Vinther, B.M.
  • Wilhelms, F.
  • Winstrup, M.
Publishers
  • NOAA National Centers for Environmental Information
Theme keywordsGlobal Change Master Directory (GCMD) Science Keywords
  • Earth Science > Climate Indicators > Paleoclimate Indicators > Ice Core Records
  • Earth Science > Paleoclimate > Ice Core Records
Global Change Master Directory (GCMD) Science Keywords
  • earth science > paleoclimate > ice cores
  • earth science > paleoclimate > ice cores
  • earth science > paleoclimate > ice cores
  • earth science > paleoclimate > ice cores
  • earth science > paleoclimate > ice cores
  • earth science > paleoclimate > ice cores
  • earth science > paleoclimate > ice cores
  • earth science > paleoclimate > ice core > age control
  • Dansgaard-Oeschger cycles
Paleoenvironmental Standard Terms (PaST) Thesaurus
  • What: ice age; Material: null
  • What: electrical conductivity; Material: bulk ice
  • What: hydrogen ion; Material: bulk ice
  • What: accumulation rate; Material: bulk ice
  • What: delta 15N; Material: null
  • What: depth; Material: null
  • What: accumulation rate; Material: bulk ice
Data Center keywordsGlobal Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Place keywords
  • Continent > North America > Greenland > NEEM > LATITUDE 77.45 > LONGITUDE -51.066667
Use Constraints
  • Cite as: Rasmussen, S.O.; Abbott, P.M.; Blunier, T.; Bourne, A.J.; Brook, E.J.; Buchardt, S.L.; Buizert, C.; Chappellaz, J.A.; Clausen, H.B.; Cook, E.; Dahl-Jensen, D.; Davies, S.M.; Guillevic, M.; Kipfstuhl, S.; Laepple, T.; Seierstad, I.K.; Severinghaus, J.; Steffensen, J.P.; Stowasser, C.; Svensson, A.M.; Vallelonga, P.; Vinther, B.M.; Wilhelms, F.; Winstrup, M. (2013-12-05): NOAA/WDS Paleoclimatology - NEEM Ice Core NEEM-1 Time Scale. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/gab6-fa09. Accessed [date].
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
  • Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
Access Constraints
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
  • None
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Last Modified: 2024-03-20
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